diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-12 09:18:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-12 09:18:04 +0200 |
| commit | 8473054e4d2581282230d01d1ae5379cdcf7a4df (patch) | |
| tree | 4606408a26ebd621ff799ffbc6f07126f7fba6b4 /drivers/iio/accel | |
| parent | staging: Remove rtl8723au driver (diff) | |
| parent | Linux 4.8-rc6 (diff) | |
| download | linux-8473054e4d2581282230d01d1ae5379cdcf7a4df.tar.xz linux-8473054e4d2581282230d01d1ae5379cdcf7a4df.zip | |
Merge 4.8-rc6 into staging-next
We need the IIO changes in here for future patches to build on.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio/accel')
| -rw-r--r-- | drivers/iio/accel/bmc150-accel-core.c | 11 | ||||
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index bf17aae66145..59b380dbf27f 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -67,6 +67,9 @@ #define BMC150_ACCEL_REG_PMU_BW 0x10 #define BMC150_ACCEL_DEF_BW 125 +#define BMC150_ACCEL_REG_RESET 0x14 +#define BMC150_ACCEL_RESET_VAL 0xB6 + #define BMC150_ACCEL_REG_INT_MAP_0 0x19 #define BMC150_ACCEL_INT_MAP_0_BIT_SLOPE BIT(2) @@ -1497,6 +1500,14 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) int ret, i; unsigned int val; + /* + * Reset chip to get it in a known good state. A delay of 1.8ms after + * reset is required according to the data sheets of supported chips. + */ + regmap_write(data->regmap, BMC150_ACCEL_REG_RESET, + BMC150_ACCEL_RESET_VAL); + usleep_range(1800, 2500); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID, &val); if (ret < 0) { dev_err(dev, "Error: Reading chip id\n"); diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index da5fb67ecb34..9d72d4bcf5e9 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -166,6 +166,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); if (ret < 0) goto error_ret; + *val = 0; *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK]; ret = IIO_VAL_INT_PLUS_MICRO; break; |